Datasheet LTC2453 (Analog Devices) - 4

LTC2453
I2C TIMING CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Notes 2, 7) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
tCONV Conversion Time l 13 16.6 23 ms fSCL SCL Clock Frequency l 0 400 kHz tHD(SDA) Hold Time (Repeated) START Condition l 0.6 µs tLOW LOW Period of the SCL Pin l 1.3 µs tHIGH HIGH Period of the SCL Pin l 0.6 µs tSU(STA) Set-Up Time for a Repeated START Condition l 0.6 µs tHD(DAT) Data Hold Time l 0 0.9 µs tSU(DAT) Data Set-Up Time l 100 ns tr Rise Time for SDA, SCL Signals (Note 6) l 20 + 0.1CB 300 ns tf Fall Time for SDA, SCL Signals (Note 6) l 20 + 0.1CB 300 ns tSU(STO) Set-Up Time for STOP Condition l 0.6 µs tBUF Bus Free Time Between a Stop and Start Condition l 1.3 µs tOF Output Fall Time VIHMIN to VILMAX Bus Load CB 10pF to l 20 + 0.1CB 250 ns 400pF (Note 6) tSP Input Spike Suppression l 50 ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4.
Integral nonlinearity is defined as the deviation of a code from a may cause permanent damage to the device. Exposure to any Absolute straight line passing through the actual endpoints of the transfer curve. Maximum Rating condition for extended periods may affect device Guaranteed by design and test correlation. reliability and lifetime.
Note 5.
Input sampling current is the average input current drawn from
Note 2.
All voltage values are with respect to GND. VCC = 2.7V to 5.5V the input sampling network while the LTC2453 is converting. unless otherwise specified.
Note 6.
CB = capacitance of one bus line in pF. V + – + – + – REF = VREF – VREF , VREFCM = (VREF + VREF )/2, FS = VREF – VREF ;
Note 7.
All values refer to VIH(MIN) and VIL(MAX) levels. V + – + – IN = VIN – VIN , –VREF ≤ VIN ≤ VREF; VINCM = (VIN + VIN )/2.
Note 8.
A positive current is flowing into the DUT pin.
Note 3.
Guaranteed by design, not subject to test.
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, unless otherwise noted) Integral Nonlinearity, VCC = 5V Integral Nonlinearity, VCC = 3V Maximum INL vs Temperature
2.0 2.0 2.0 VCC = 5V V + CC = 3V VCC = VREF = 5V, 4.1V, 3V 1.5 V + + REF = 5V 1.5 VREF = 3V V – – REF = 0V VREF = 0V 1.0 1.0 1.5 0.5 TA = –45°C, 25°C, 90°C 0.5 TA = –45°C, 25°C, 90°C 0 0 1.0 INL (LSB) INL (LSB) INL (LSB) –0.5 –0.5 –1.0 –1.0 0.5 –1.5 –1.5 –2.0 –2.0 0 –5 –4 –3 –2 –1 0 1 2 3 4 5 –3 –2 –1 0 1 2 3 –50 –25 0 25 50 75 100 DIFFERENTIAL INPUT VOLTAGE (V) DIFFERENTIAL INPUT VOLTAGE (V) TEMPERATURE (°C) 2453 G01 2453 G02 2453 G03 2453fc 4 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Analog Inputs And References Power Requirements I2C Inputs And Outputs I2C Timing Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Application Package Description Revision History Related Parts